during the campaign and the recent news conference and mr. obama talked as if the only way he knew to tackle deductions was trimming them one by one. >> raise revenue through dynamic scoring or closing loopholes that have not been identified. >> a cap on deductions though has the benefit of avoiding arguments over specific deductions by just limiting the total. so, it should not affect the small businesses, it appears on its face to be a fairway to go. >> and the democratic senator kent conrad says there's renewed interest in a cap. and the 750 billion dollars in revenue from the cap would approach the take from the rate increase on the wealthy and congress and the president's budget office put that at 825 to 850 billion and the president adds in other things. >> it's very difficult to see how you make up that trillion dollars if we're serious about deficit reduction just by closing loopholes and deductions and the math tends not to work. >> if the deduction cap were lowered to 25,000, close to 1.4 trillion, but also people making less than 2